diff --git a/services/client/common/methods/creditClassification/createWithInsurance.js b/services/client/common/methods/creditClassification/createWithInsurance.js
index d22dd9113..1d4a0abe6 100644
--- a/services/client/common/methods/creditClassification/createWithInsurance.js
+++ b/services/client/common/methods/creditClassification/createWithInsurance.js
@@ -1,11 +1,17 @@
 module.exports = function(Self) {
     Self.remoteMethod('createWithInsurance', {
         description: 'Creates both classification and one insurance',
-        accepts: {
+        accepts: [{
             arg: 'data',
             type: 'object',
             http: {source: 'body'}
-        },
+        }, {
+            arg: 'context',
+            type: 'object',
+            http: function(ctx) {
+                return ctx;
+            }
+        }],
         returns: {
             root: true,
             type: 'boolean'
@@ -16,21 +22,23 @@ module.exports = function(Self) {
         }
     });
 
-    Self.createWithInsurance = async data => {
+    Self.createWithInsurance = async (data, ctx) => {
         let transaction = await Self.beginTransaction({});
 
         try {
             let classificationSchema = {client: data.clientFk, started: data.started};
             let newClassification = await Self.create(classificationSchema, {transaction});
+            let CreditInsurance = Self.app.models.CreditInsurance;
             let insuranceSchema = {
                 creditClassification: newClassification.id,
                 credit: data.credit,
                 grade: data.grade
             };
 
-            Self.app.models.CreditInsurance.create(insuranceSchema, {transaction});
-
+            let newCreditInsurance = await CreditInsurance.create(insuranceSchema, {transaction});
             await transaction.commit();
+            await CreditInsurance.messageSend(newCreditInsurance, ctx.req.accessToken);
+
             return newClassification;
         } catch (e) {
             transaction.rollback();
diff --git a/services/client/common/models/credit-classification.json b/services/client/common/models/credit-classification.json
index 74edb6640..51bda330a 100644
--- a/services/client/common/models/credit-classification.json
+++ b/services/client/common/models/credit-classification.json
@@ -28,7 +28,7 @@
     }
   },
   "relations": {
-    "client": {
+    "customer": {
       "type": "belongsTo",
       "model": "Client",
       "foreignKey": "client"
diff --git a/services/client/common/models/credit-insurance.js b/services/client/common/models/credit-insurance.js
index 155d4de44..63fe8bfaa 100644
--- a/services/client/common/models/credit-insurance.js
+++ b/services/client/common/models/credit-insurance.js
@@ -19,4 +19,51 @@ module.exports = function(Self) {
         message: 'The grade must be an integer greater than or equal to zero',
         allowNull: true
     });
+
+    Self.messageSend = async function(data, accessToken) {
+        let filter = {
+            include: {
+                relation: 'classification',
+                scope: {
+                    fields: ['client'],
+                    include: {
+                        relation: 'customer',
+                        scope: {
+                            fields: ['name', 'salesPersonFk'],
+                            include: {
+                                relation: 'salesPerson',
+                                scope: {
+                                    fields: 'userFk',
+                                    include: {
+                                        relation: 'user',
+                                        scope: {
+                                            fields: ['name']
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        };
+
+        let ctx = {req: {accessToken: accessToken}};
+        let insurance = await Self.findById(data.id, filter);
+        let customer = insurance.classification().customer();
+        let salesPerson = customer.salesPerson().user().name;
+        let grade = data.grade ? `(Grado ${data.grade})` : '(Sin grado)';
+        let message = {
+            message: `He cambiado el crédito asegurado del cliente "${customer.name}" a ${data.credit} € ${grade}`
+        };
+
+        Self.app.models.Message.send(salesPerson, message, ctx);
+    };
+
+    // Update from transaction misses ctx accessToken. 
+    // Fixed passing accessToken from method messageSend()
+    Self.observe('after save', async function(ctx) {
+        if (ctx.options.accessToken)
+            await Self.messageSend(ctx.instance, ctx.options.accessToken);
+    });
 };
diff --git a/services/loopback/common/methods/message/send.js b/services/loopback/common/methods/message/send.js
new file mode 100644
index 000000000..0a918a1d2
--- /dev/null
+++ b/services/loopback/common/methods/message/send.js
@@ -0,0 +1,40 @@
+module.exports = Self => {
+    Self.remoteMethod('send', {
+        description: 'Send message to user',
+        accessType: 'WRITE',
+        accepts: [{
+            arg: 'recipient',
+            type: 'string',
+            required: true,
+            description: 'The user/alias name',
+            http: {source: 'path'}
+        }, {
+            arg: 'data',
+            type: 'object',
+            required: true,
+            description: 'Message data',
+            http: {source: 'body'}
+        }, {
+            arg: 'context',
+            type: 'object',
+            http: function(ctx) {
+                return ctx;
+            }
+        }],
+        returns: {
+            type: 'boolean',
+            root: true
+        },
+        http: {
+            path: `/:recipient/send`,
+            verb: 'post'
+        }
+    });
+
+    Self.send = async (recipient, data, ctx) => {
+        let query = `SELECT vn.messageSendWithUser(?, ?, ?) AS sent`;
+        let [result] = await Self.rawSql(query, [ctx.req.accessToken.userId, recipient, data.message]);
+
+        return result;
+    };
+};
diff --git a/services/loopback/common/methods/message/specs/send.spec.js b/services/loopback/common/methods/message/specs/send.spec.js
new file mode 100644
index 000000000..ad5ae54c1
--- /dev/null
+++ b/services/loopback/common/methods/message/specs/send.spec.js
@@ -0,0 +1,12 @@
+const app = require(`${servicesDir}/client/server/server`);
+
+describe('message send()', () => {
+    it('should call the send method and return the response', done => {
+        let ctx = {req: {accessToken: {userId: 1}}};
+        app.models.Message.send('salesPerson', {message: 'I changed something'}, ctx)
+            .then(response => {
+                expect(response.sent).toEqual(1);
+                done();
+            });
+    });
+});
diff --git a/services/loopback/common/models/message.js b/services/loopback/common/models/message.js
new file mode 100644
index 000000000..ecebfb5d3
--- /dev/null
+++ b/services/loopback/common/models/message.js
@@ -0,0 +1,3 @@
+module.exports = Self => {
+    require('../methods/message/send.js')(Self);
+}
\ No newline at end of file
diff --git a/services/loopback/common/models/message.json b/services/loopback/common/models/message.json
new file mode 100644
index 000000000..2a855c907
--- /dev/null
+++ b/services/loopback/common/models/message.json
@@ -0,0 +1,39 @@
+{
+    "name": "Message",
+    "base": "VnModel",
+    "options": {
+        "mysql": {
+          "table": "message"
+        }
+    },
+    "properties": {
+      "id": {
+        "type": "Number",
+        "id": true,
+        "description": "Identifier"
+      },
+      "sender": {
+        "type": "String",
+        "required": true
+      },
+      "recipient": {
+        "type": "String",
+        "required": true
+      },
+      "message": {
+        "type": "String"
+      }
+    },
+    "relations": {
+      "remitter": {
+        "type": "belongsTo",
+        "model": "User",
+        "foreignKey": "sender"
+      },
+      "receptor": {
+        "type": "belongsTo",
+        "model": "User",
+        "foreignKey": "recipient"
+      }
+    }
+}
\ No newline at end of file
diff --git a/services/loopback/common/models/worker.json b/services/loopback/common/models/worker.json
index f8399be8d..81807e6f6 100644
--- a/services/loopback/common/models/worker.json
+++ b/services/loopback/common/models/worker.json
@@ -20,6 +20,10 @@
     "name": {
       "type": "string",
       "required": true
+    },
+    "userFk": {
+      "type" : "Number",
+      "required": true
     }
   },
   "relations": {
diff --git a/services/loopback/server/model-config.json b/services/loopback/server/model-config.json
index a46e46ea0..f97479309 100644
--- a/services/loopback/server/model-config.json
+++ b/services/loopback/server/model-config.json
@@ -101,5 +101,8 @@
   },
   "Producer": {
     "dataSource": "vn"
+  },
+  "Message": {
+    "dataSource": "vn"
   }
 }